大交通量拓宽工程桥梁纵缝拼接施工的研究

Study Of Bridge's Longitudinal Joint Linking Engineering During Widening Construction With Heavy Traffic

本文针对拓宽工程的特点,对于桥梁拼接中的的纵缝连接施工问题提出了先采用临时构件将新老桥的梁板临时连接,使得拼宽侧的桥梁结构与老桥共同承受车辆荷载,变形一致,在此基础上不封闭交通,在维持行车的同时浇注混凝土。从而在大交通量的情况下既保证车辆的正常通行又确保施工能够顺利进行,同时也保证了施工质量。

In this article, according to the characteristics of widen ing construc tion, for the bridge's longitudinal joint liking engineering, we put forward th e following method: the beams and slabs of new bridge and original bridge will be connected temporarily with temporary members so that the bridge structure of ne w bridge can be born the same pressure as the original bridge and the deform can be the same. Based on this method the traffic can be kept open and we also can pouring the concrete at the same time. Thus we can ensure the normal traffic dur ing the construction with heavy traffic and the quality can be ensured too.